Toothing-machine.



No. 66mm. Y Patentd Nov. 6, |900.

S. J. LAUGI-ILIN.

TGDTHING MACHINE.

(Applicatinn med June 19, 1899.)

2 Sheets-Sheet l.

jms scams PETERS co. PHcToLl-ma.. wswmoron. D c.

No. 66mm Patontod Nov. 6, |900'.

S. J. LAUGHLIN.

TOOTHINE IAGIIINE.

(Application led June' 19, 1899.)

(No Model.) 2 Sheets-Sheet 2-.V

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SAMUEL JOHN LAUGHLIN," OF GUELPH, CANADA, ASSIGNOR TO EDMUND PALMER HAWKINS, OF SAME PLACE.

TOOTHINGflVlACl-HNE.

fsrnclrrcazrron forming part of Letters Patent No. 661,218, dated November e, 1900. Application filed June 19. 1899 Serial No. 721,085. (No modell' lo all whom, t may concern.-

Be it known that l, SAMUEL JOHN LAUGH- LIN, manufacturer, of the city of Guelph, in the county of lrVellington, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Toothing-Machinos, of which the following is a specification.

My invention relates to improvements in toothing-niachines; and the object of the invention is to devise a means whereby the cutter-head may be manipulated with the greatest possible ease and conveniently driven during the various gyrations over the board to be operated upon, and a subsidiary object is to provide a secure means for holding the board rigidly in position during the operation of the toothing cutter-head.

The invention consists, essentially, of the toothing cutter-head provided with a suitable adjustable guard and operating-handle, a pulley on the cutter spindle connected by a driven 'rope and guiding-pulleys and vertically-adjustable pulleys to the pulley on the main driving-shaft, the vertically-adj ustable pulley, which is designed to keep the driven rope taut, being counterbalanced by a weight connected over a guiding-pulley to the oppositie side of the cutter-head, the board loeing suitably held in position by clamps and the parts being constructed and arranged in detail, as hereinafter more particularly explained.

Figure l is a sectional perspective view showing two iloors of a building and my innproved rnachine complete. Fig. 2 is a perspective View of the cutter-head. Fig. 3 is a perspective View ot` the guiding-pulleys secured to the table. Fig. 4 is a cross-section. Fig. 5 is a perspective detail of the adjustable-angle guiding-pulleys. Fig. 6 is a sectional plan ot Fig. 5. Fig. 7 is a detail of the adjustable clamp for holding one end of the board to be operated upon. Fig. 8 is a detail of the adjustable clamp for holding the opposite end of the board. Fig. 9 is a detail view of the cutter-head.

In the drawings like letters of reference indicate corresponding parte in each iignre.

A is a supponting-table for the work, of whichA' is the top of the table. The top A is provided with a longitudinal slot a.

B is the board which it is desired to smooth ready to receive the veneer.

C is one holding-clamp which is provided with teeth cand a depending tongue C, which is designed to extend through the slot ct. c is a washer, and c2 is a screw-pin which eX- tends through the portion C C and washer c'. U2 is a tightening-arm which is fitted on to the threaded end of the screw-pin o2 and by which such clamping-block may be secured into any desired position in the slot Ct. The board B is pressed against the teeth o of the clamp C, so as to hold it in position, and the opposite end of the board is held in position by the clamping-lever D, which is provided with the laterally-projecting teeth CZ and is pivoted at cl/ upon the plate D, the movement of the lever being limited by the strap D2.

DS is a tongue depending from the plate D' and designed to extend through the slot a.

d3 is a washeigand d4 is a screw-pin extending through the plate D', tongue D3, and washer d3.

D4 is a tightening-arm which tits upon the end of the screw-pin d4 and is designed to tighten the plate, so as to hold it in any desired position in the slot ct.

D5 is a lever pivoted at (Z5 and provided with a cam-shaped end d6. By swinging the lever D5 upon its pivot the lever D may be released or tightened, so as to project or release the teeth d at the end of the board. When the teeth (l are projected into the end of the board, of course it will be securely held in position ready for the operation of the cutters.

E is the cutter-head, which is provided with suitable toothing-knives e, suitably secured in position. These knives are ground to points at their lower ends. By toothing is meant that the teeth form as they pass over the board a roughened surface, so as to form an easy means for applying glue and cementing two surfaces together. As the form of the cutterhead forms no essential feature of Iny invention, I do not particularly describe it except so far that it is provided with a hub e', from which extends upwardly the spindle E'.

F is a grooved pulley suitably secured on the spindle E'.

G G are cross-bars provided with rectangular extensions G' and secured together at the ends by the pins t, extending through the ICO sleeves g', which keep the bars at determine distances apart.

G2 denotes two right-angular extensions extending laterally from the upper bar G, as indicated.

`II is the hanging loop having the ends secured in the upper bars G.

I is a substantially acute angular loop journaled in the extensions G2, as indicated, and having the bent endsz'provided with flat end portions i'.

J is a cutter-head guard-ring which is provided with upwardly-extending spindles j, which pass through both bars G and are normally spring-held above the level of the bottom of the knives by the spiral springs j', extending between the lower bar G, and a pin j, extending through the spindles. The upper ends of the spindles j extend directly underneath the iiat ends t" of the angular loop I. The apex of the angular loop I is slightly dat and normally rests upon the top extension G'.

I is a supplemental loop secured in the wire loop and extending downwardly on both sides ot' the bar G'. The end of the loop I is normally held within the notch g3 in the sleeve g4, separating the ends of the extensions G', the pin g5 holding the sleeves in position. Y

K is an eye attached to or forming part of the sleeve g4.

L is a handle connected to the bars G by the metal strap extensions gs. It will be noticed that the handle L is obliquely set for convenience in operating the cutter-head.

In the position that the guard is shown in the drawings the angularloop Iis shown held down by the supplemental loop I', extending into the notch g3 ofthe sleeve g4, and in this position it will be understood that the cutters will not act upon the board, as the flat ends t" of the angular loop securely hold the guard down. By releasing the supplemental loop I' the ring-guard is thrown up, and the cutters are free to operate upon the board..

In order to suspend the cutter when it is desired to change the board, I provide a rope M, which passes over a grooved pulley M', which has bearings in suitable brackets m, secured to the ceiling. The rope is provided with a hook m' at its lower end, a stop m2 to prevent the hook from passing up beyond the reach of the operator of the machine, and a weight m3 for maintaining the hook at the desired height.

F' is a driven rope,which passes around the pulley F and over the guiding-pulleys N N at the end of the table down around the angularly-set guiding-pulleys O and up over the main driving-pulley P, secured to the main driving-shaft P'. The guiding-pulleys N N are journaled upon the reduced endsn of the horizontally-bent cross-bar N', which is journaled on the pin n', extending upwardly vfrom the stud n2, which is secu red in the upper end of the tube N2. The tube N2 is adjustably supported in the end hole n3 of the bracket N3 by the set-screw n4. It will thus be seen' that the guiding-pulleys N may be adjusted to any desired height, and being journaled on a vertical pin will swing horizontally to follow lthe gyrations of the cutter-head.

The guiding-pulleys O are journaled on studs 0, attached to or forming part of the angularly-arranged plates O' O', which are secured together by suitable pins or rivets o', extending through the lugs o2. It will be noticed that the pulleys O at their outer end converge toward each other cr lie parallel to one ofthe sides of the two outer sides of the plate O' and ihat the farther side away from the vertical plane passes immediately to the outside of the pulleys N. The plates O' O' have a central hole 03, through which exten ds the tube N2, upon the top of which the pulleys N are journaled. It will thus be seen that both the pulleys O and N move on the same center, and consequently will turn with each other according as to how the cutterhead is moved. rlhe plates O' freely reciprocate upon the tube N2 and serve,together with the pulleys, as a weight to take up the slack caused in the movement of the cutter-head. The plates O' and pulleys O are counterbalanced on the opposite end of the table by the weight Q, which is connected by the Vcord q to the eye K, attached to the sleeve g', such rope passing over the guiding-pulley ql', secured on the end of the table.

In the construction hereinbeforedescribed it will be seen that the cutters are perfectly counterbalanced and that they may be manipulated with the greatest possible ease, and the drive is a perfect' one, as all the slack in the driven rope is taken up during all the gyrations of the cutters. When it is desired to move the board and put a new one in position, it is only necessary to pull down the hook m', so as to grasp the hanging loop I-I, whereby the cutter may be suspended during the operation of removing the board and placing another one in position to undergo the saine operation.

Although I show this invention as applied to a toothing cutter-head, it will likewise be understood that it might be with equal facility applied to drills or other machines of a like nature which require a certain amount of gyration over a plain surface in order to perform the different work for which they are designed.

What I claim as my invention is l. In a toothing-machine, the combination with the cutter-head and the spindle thereof and the cross-bars in which such spindle is journaled, of the guard-ring surrounding the cutter-head, the spindles extending from the guard-ring up through the cross-bar and spring means for normally holding the spindles and guard-ring up above the level of the bottom of the cutters as and for the purpose specified.

2. In a toothing-machine, the combination with the cutter-head and the spindle thereof and the cross-bars in which such spindle is IOS IIO

journaled, of the guard-ring surrounding the cutter-head, the spindles extending from the guard-ring up through the cross-bar, spring means for normally holding the spindles and guard-ring up above the level of the bottom of the cutters, the angular Wire loop suitably supported on the extensions of the cross-bar and provided with a supplemental loop de signed to engage with the-notch ou one of the sleeves of the connecting-spindles of the cross-bar and flat ends to extend over and abut the ends of the spindles of the guardring as and for the purpose specified.

3. The combination with the cutter-head and driving-pulley thereof secured on the spindle ofthe same, the freely-movable frame carrying said head and pulley, of the endless rope drive passing over the pulley of the cut terhead at one end and over the main driving-pulley at the opposite end, the verticallyadjustahle rod supported ih a bracket at the end of the table, the angularlyset guidingpulleys journaled on the end of a cross-bar pivotally held on the top of the vertical rod,: the plate vertically adjustable on the rod and the an gularly-set converging guiding-pulleys journaled in studs on the plate and forming with the plate a Weight to keep the rope taut during the gyrations of the cutter-head as and for the purpose specified.

4. In a machine of the class described, the' combination with the table and longitudinal slot extending throughout the length thereof, of the clamping-plate C having a depending tongue and washer `and screw pin with a tightening-arm designed to hold one end of the board, and the opposite clampingdever,` the plate u pon which it is pivoted, the tongue depending from the plate, the screw-pin and washer and tightening-arm and the cam-lever all operated in order to clamp or release the opposite end of the board as specified.

SAMUEL JOHN LAUGHLIN.

Witnesses:

JOHN SMITH, E. P. HAWKINS. 

